Approaching community health requires to clarify concepts such as health and community, its relationships, and the context in which they occur, as these concepts determine specific forms of intervention. Modern medicine is structured on the positivist science developed from the scientific revolution of the fifteenth and sixteenth centuries. The interventions of health promotion are also conditioned by the classical concepts of disease, transmission and risk, which guide community interventions. The health care systems are called to move from a welfare and curative approach to a preventive approach and promoting health and life, as mentioned by the strategy of Primary Health Care. It is crucial to review the concept of health prevailing, in the light of an easing or epistemological opening.